*{
    margin: 0;
    padding: 0;
    font-size: 16px;
    font-weight: normal;
}
body{
    position: relative;
    height: 100vh;
    width: 100vw;
    cursor: pointer;
}
img{
    display: inline-block;
    height: auto;
    max-width: 100%;
}
.main{
    position:absolute;   
    right: 20%;
    top: 70%;
}
.main span{
    font-size: 2rem;
    color: #fff;
    opacity: 100%;
    animation: star 3s ease-in infinite;
}
@keyframes star {
    0%{
        opacity: 0%;
    }
    50%{
        opacity: 100%;
    }
    100%{
        opacity: 0%;
    }
}